CN211133535U - Chlorinated paraffin tail gas recovery processing system - Google Patents
Chlorinated paraffin tail gas recovery processing system Download PDFInfo
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- CN211133535U CN211133535U CN201921648935.5U CN201921648935U CN211133535U CN 211133535 U CN211133535 U CN 211133535U CN 201921648935 U CN201921648935 U CN 201921648935U CN 211133535 U CN211133535 U CN 211133535U
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Abstract
The utility model relates to a tail gas recovery processing technology field, concretely relates to chlorinated paraffin tail gas recovery processing system, the system includes gas-liquid separation equipment, chlorine residue recovery unit and tail gas absorbing device, gas-liquid separation equipment includes the gas-liquid separation jar, chlorine residue recovery unit includes the two-stage and closes the cauldron, tail gas absorbing device includes dilute acid recoverer and dilute alkali absorber, the gas outlet of dilute acid recoverer passes through the air inlet intercommunication of second connecting pipe with the dilute alkali absorber, the extraction opening passes through the air inlet intercommunication of pipeline and vacuum pump and second grade closure cauldron, the gas outlet of one-stage closure cauldron is through the air inlet intercommunication of first connecting pipe and dilute acid recoverer. The utility model discloses can retrieve and handle the chlorine residue and the hydrogen chloride tail gas that produce in the chlorinated paraffin production process, can effectively avoid tail gas to discharge atmosphere pollution, the equipment corrosion that causes and healthy impaired scheduling problem not through handling, can be with chlorine residue and hydrogen chloride recycle simultaneously.
Description
Technical Field
The utility model relates to a tail gas recovery processing technology field, concretely relates to chlorinated paraffin tail gas recovery processing system.
Background
The chlorinated paraffin is a chlorinated derivative of paraffin, has the advantages of low volatility, flame retardance, good electrical insulation, low price and the like, can be used as a flame retardant and a chloroethylene auxiliary plasticizer, is widely used for producing products such as cable materials, floor materials, hoses, artificial leather, rubber and the like, and can also be used as an additive of products such as polyurethane waterproof coatings, polyurethane plastic runways, lubricating oil and the like.
The thermal chlorination method, the catalytic chlorination method and the photochlorination method are three common chlorinated paraffin production processes at home and abroad at the present stage. The thermal chlorination method is a method of preparing chlorinated paraffin by dissociating chlorine molecules by heat energy to form chlorine atoms of free radicals, and then performing substitution reaction with paraffin hydrocarbon. The catalytic chlorination method promotes chlorine molecules to be activated to generate free radicals by adding an initiator so as to carry out substitution reaction. The photochlorination method is a method in which chlorine molecules are dissociated by ultraviolet irradiation to form radical chlorine atoms, and the radical chlorine atoms are substituted with paraffin hydrocarbons. When the chlorinated paraffin is produced by the three methods, tail gas containing residual chlorine and hydrogen chloride gas is generated, and if the tail gas is discharged without being treated, serious atmospheric pollution is caused, the production environment is influenced, production equipment is corroded, and the health of workers is harmed; in addition, the residual chlorine in the tail gas refers to chlorine which is not completely utilized in the production, and unnecessary waste is generated when the chlorine is not recovered or is improperly recovered.
Therefore, the chlorinated paraffin tail gas recovery processing system is provided, and is necessary to solve the problems that the residual chlorine is unnecessarily wasted during tail gas emission, the residual chlorine and the hydrogen chloride gas pollute the atmosphere, the production is influenced, and the health is damaged.
SUMMERY OF THE UTILITY MODEL
Contain chlorine residue and the hydrogen chloride gas technical problem that needs recovery processing to tail gas in the chlorinated paraffin production process, the utility model provides a chlorinated paraffin tail gas recovery processing system, chlorine residue in the recoverable tail gas of this system to can high-efficient desorption not by the trace chlorine and the hydrogen chloride of retrieving.
The utility model provides a chlorinated paraffin tail gas recovery processing system, which comprises a gas-liquid separation device, a residual chlorine recovery device and a tail gas absorption device,
the gas-liquid separation device comprises a gas-liquid separation tank, the gas-liquid separation tank is provided with a liquid inlet, a liquid outlet and an air extraction opening,
the residual chlorine recovery device comprises a two-stage gate-control kettle, the gate-control kettle is provided with an air inlet and an air outlet, the air outlet of the two-stage gate-control kettle is communicated with the air inlet of the first-stage gate-control kettle through a pipeline,
the tail gas absorption device comprises a dilute acid recoverer and a dilute alkali absorber, the dilute acid recoverer and the dilute alkali absorber are respectively provided with an air inlet and an air outlet, the air outlet of the dilute acid recoverer is communicated with the air inlet of the dilute alkali absorber through a second connecting pipe,
the extraction opening is communicated with the air inlet of the second-stage closure kettle through a pipeline and a vacuum pump, and the air outlet of the first-stage closure kettle is communicated with the air inlet of the dilute acid recoverer through a first connecting pipe.
Furthermore, a demisting plate is arranged at the air outlet of the dilute alkali absorber. The demisting plate can demist the tail gas exhausted after being treated by the dilute alkali absorber, and separate the gas from the entrained liquid drops.
Further, the first connecting pipe extends to the bottom end inside the dilute acid recoverer. The first connecting pipe can be directly introduced into water contained in the dilute acid recoverer, and is beneficial to absorption of hydrogen chloride in the tail gas by water.
Furthermore, an air outlet hole is formed in the side wall of the end part of the first connecting pipe, which is positioned on one side of the interior of the dilute acid recoverer. Tail gas can follow the gas outlet and get into the aquatic that holds in the diluted acid recoverer, compares at the tip opening with conventional pipeline, opens a plurality of gas outlets on the lateral wall and easily causes the rolling of water, and the contact of water and tail gas is abundant more, thorough, and the hydrogen chloride in the tail gas can be absorbed by water more effectively, obtains recycle's diluted acid.
Further, the second connecting pipe extends to the bottom end inside the dilute alkali absorber. The second connecting pipe can be directly introduced into the dilute alkali liquor contained in the dilute alkali absorber, and is favorable for absorbing the hydrogen chloride in the tail gas by the dilute alkali liquor.
Furthermore, the side wall of the end part of the second connecting pipe, which is positioned at one side inside the dilute alkali absorber, is provided with an air outlet. During tail gas can follow the dilute alkali liquid that the venthole got into holds in the dilute alkali absorber, compare at the tip opening with conventional pipeline, open a plurality of ventholes on the lateral wall and easily cause the rolling of dilute alkali liquid, the contact of dilute alkali liquid and tail gas is abundant more, thorough, and the hydrogen chloride that is not absorbed by water in the tail gas can be absorbed by dilute alkali liquid more effectively, can promote tail gas treatment effect.
Further, a pH meter is arranged in the dilute alkali absorber. Technicians can display the numerical analysis using condition of the dilute alkali absorber through the pH meter and judge whether the dilute alkali absorber fails according to the change of the pH value of the dilute alkali, and the pH meter can provide guidance for timely replacement of dilute alkali liquid in the dilute alkali absorber, so that the treatment effect of tail gas is ensured.
The working principle of the utility model is that,
the vacuum pump vacuumizes the interior of the gas-liquid separation tank, chlorinated paraffin produced by the chlorination kettle enters the gas-liquid separation tank from a liquid inlet of the gas-liquid separation tank and is subjected to gas-liquid separation, the vacuum pump is started again to pump gas out from a gas extraction opening, tail gas enters the second-stage gate control kettle, liquid paraffin is filled in the gate control kettle, and residual chlorine in the tail gas can be absorbed; tail gas enters a dilute acid recoverer along with the first connecting pipe, and water in the dilute acid recoverer can absorb hydrogen chloride in the tail gas to form a recyclable dilute acid solution; and then the tail gas enters a dilute alkali absorber through a second connecting pipe, and the dilute alkali reacts with the hydrogen chloride which is not removed in the tail gas, so that the hydrogen chloride in the tail gas is completely removed, and the tail gas reaches the emission standard.
The utility model has the advantages that,
the utility model provides a chlorinated paraffin tail gas recovery processing system, can retrieve and handle chlorine residue and hydrogen chloride tail gas that produce in the chlorinated paraffin production process, can effectively avoid tail gas not through handling just discharge the problem such as air pollution, equipment corrosion and health damage that cause, green; meanwhile, residual chlorine and hydrogen chloride can be recycled, and energy conservation and emission reduction are achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
In the figure, 1-a gas-liquid separation tank, 2-a second-stage closure kettle, 3-a first-stage closure kettle, 4-a dilute acid recoverer, 5-a dilute alkali absorber, 6-a first connecting pipe, 7-a second connecting pipe, 8-a vacuum pump, 9-a demisting plate, 10-an air outlet and 11-a pH meter.
Detailed Description
In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
Example 1
As shown in figure 1, a chlorinated paraffin tail gas recovery processing system comprises a gas-liquid separation device, a residual chlorine recovery device and a tail gas absorption device,
the gas-liquid separation device comprises a gas-liquid separation tank 1, the gas-liquid separation tank 1 is provided with a liquid inlet, a liquid outlet and an air extraction opening,
the residual chlorine recovery device comprises a two-stage handle kettle, the handle kettle is provided with an air inlet and an air outlet, the air outlet of the two-stage handle kettle 2 is communicated with the air inlet of the first-stage handle kettle 3 through a pipeline,
the tail gas absorption device comprises a dilute acid recoverer 4 and a dilute alkali absorber 5, the dilute acid recoverer 4 and the dilute alkali absorber 5 are respectively provided with an air inlet and an air outlet, the air outlet of the dilute acid recoverer 4 is communicated with the air inlet of the dilute alkali absorber 5 through a second connecting pipe 7,
the air exhaust port is communicated with the air inlet of the second-stage closure kettle 2 through a pipeline and a vacuum pump 8, and the air outlet of the first-stage closure kettle 3 is communicated with the air inlet of the dilute acid recoverer 4 through a first connecting pipe 6.
Example 2
As shown in fig. 2, on the basis of example 1,
a demisting plate 9 is arranged at the air outlet of the dilute alkali absorber 5;
the first connecting pipe 6 extends to the bottom end inside the dilute acid recoverer 4, and an air outlet 10 is arranged on the side wall of the end part of the first connecting pipe 6, which is positioned at one side inside the dilute acid recoverer 4;
the second connecting pipe 7 extends to the bottom end inside the dilute alkali absorber 5, and the side wall of the end part of the second connecting pipe 7, which is positioned at one side inside the dilute alkali absorber 5, is provided with an air outlet 10;
a pH meter 11 is arranged in the dilute alkali absorber 5.
Although the present invention has been described in detail by referring to the drawings in conjunction with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and substance of the present invention, and these modifications or substitutions are intended to be within the scope of the present invention/any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A chlorinated paraffin tail gas recovery processing system is characterized in that the recovery processing system comprises a gas-liquid separation device, a residual chlorine recovery device and a tail gas absorption device,
the gas-liquid separation device comprises a gas-liquid separation tank (1), the gas-liquid separation tank (1) is provided with a liquid inlet, a liquid outlet and an air extraction opening,
the residual chlorine recovery device comprises a two-stage gate-control kettle, the gate-control kettle is provided with an air inlet and an air outlet, the air outlet of the second-stage gate-control kettle (2) is communicated with the air inlet of the first-stage gate-control kettle (3) through a pipeline,
the tail gas absorption device comprises a dilute acid recoverer (4) and a dilute alkali absorber (5), the dilute acid recoverer (4) and the dilute alkali absorber (5) are respectively provided with an air inlet and an air outlet, the air outlet of the dilute acid recoverer (4) is communicated with the air inlet of the dilute alkali absorber (5) through a second connecting pipe (7),
the air exhaust port is communicated with an air inlet of the second-stage customs clearance kettle (2) through a pipeline and a vacuum pump (8), and an air outlet of the first-stage customs clearance kettle (3) is communicated with an air inlet of the dilute acid recoverer (4) through a first connecting pipe (6).
2. The chlorinated paraffin tail gas recovery and treatment system as claimed in claim 1, wherein a demisting plate (9) is arranged at the gas outlet of the dilute alkali absorber (5).
3. The chlorinated paraffin tail gas recovery and treatment system as claimed in claim 1, wherein the first connecting pipe (6) extends to the inner bottom end of the dilute acid recoverer (4).
4. The chlorinated paraffin tail gas recovery and treatment system as claimed in claim 3, wherein the side wall of the end part of the first connecting pipe (6) at one side inside the dilute acid recoverer (4) is provided with an air outlet (10).
5. The chlorinated paraffin tail gas recovery and treatment system according to claim 1, wherein the second connecting pipe (7) extends to the bottom end inside the dilute alkali absorber (5).
6. The chlorinated paraffin tail gas recovery and treatment system according to claim 5, wherein the side wall of the end part of the second connecting pipe (7) at one side inside the dilute alkali absorber (5) is provided with an air outlet (10).
7. The chlorinated paraffin tail gas recovery and treatment system according to claim 1, wherein a pH meter (11) is arranged in the dilute alkali absorber (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921648935.5U CN211133535U (en) | 2019-09-29 | 2019-09-29 | Chlorinated paraffin tail gas recovery processing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921648935.5U CN211133535U (en) | 2019-09-29 | 2019-09-29 | Chlorinated paraffin tail gas recovery processing system |
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| Publication Number | Publication Date |
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| CN211133535U true CN211133535U (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921648935.5U Active CN211133535U (en) | 2019-09-29 | 2019-09-29 | Chlorinated paraffin tail gas recovery processing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113144870A (en) * | 2021-05-19 | 2021-07-23 | 苏尼特金曦黄金矿业有限责任公司 | Gold detection tail gas and tail liquid purification and recovery process based on optimized milling and leaching |
| CN115232645A (en) * | 2022-08-17 | 2022-10-25 | 山东沾化阳光化学有限公司 | Refining process and equipment for recovering hydrochloric acid in chlorinated paraffin production process |
-
2019
- 2019-09-29 CN CN201921648935.5U patent/CN211133535U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113144870A (en) * | 2021-05-19 | 2021-07-23 | 苏尼特金曦黄金矿业有限责任公司 | Gold detection tail gas and tail liquid purification and recovery process based on optimized milling and leaching |
| CN115232645A (en) * | 2022-08-17 | 2022-10-25 | 山东沾化阳光化学有限公司 | Refining process and equipment for recovering hydrochloric acid in chlorinated paraffin production process |
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